Kilo candy

One kilogram of chocolate candy cost 10 euros. Kate buys 250 grams and had the 8 pack of candy. How much does cost one bonbon?

Correct answer:

b =  0.3125 Eur

Step-by-step explanation:

$$\begin{gathered} c=10\mathrm{/}1000={\displaystyle \frac{1}{100}}=0.01\text{ Eur/gram } \\ b=c\cdot 250\mathrm{/}8=0.01\cdot 250\mathrm{/}8={\displaystyle \frac{5}{16}}={\displaystyle \frac{5}{16}}\text{ Eur}=0.3125\text{ Eur} \end{gathered}$$

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